This forces customers to visit the product's site and select a mixture, instead of only incorporating the default 1 to the cart. Note that merchandise with no mixture will continue to have an "Increase to cart" button from the classification webpage. As pointed out above, the hreflang and canonical tags https://yoursocialpeople.com/story2767854/rumored-buzz-on-tag-hreflang-automatici-e-tag-canonici-seo